Striker-Fired Firearm Trigger Bar Camming and Reversible Grip
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Solution Overview
Problem
Striker-fired firearms require complex and costly mechanisms for cocking and releasing the striker, and existing grip size solutions for firearms are cumbersome and inconvenient, particularly for users needing to switch between different grip sizes.
Innovation Solution
A striker-fired firearm design incorporating a trigger bar camming member that pivots to move the trigger bar from a blocking to a non-blocking position, allowing easy slide removal for maintenance and featuring a reversible backstrap system for adjustable grip sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a striker catch mechanism is used to hold the striker in a cocked position, then the firing control mechanism can reliably cock and release the striker, but the slide cannot be removed from the frame for maintenance without displacing the striker catch
Solution Approach 1:
The trigger bar is designed to be movable between two positions: a first position where it blocks the striker's path and engages the striker catch, and a second position where it does not block the striker's path allowing slide removal. This dynamic repositioning of the trigger bar resolves the contradiction by allowing the system to switch between reliable striker engagement and easy slide removal modes
2Adaptability or versatility
If multiple replacement grips of varying sizes are provided, then users can find a grip that fits their hand size, but the extra grips are cumbersome to carry and may be misplaced or lost
Solution Approach 1:
Instead of providing multiple separate replacement grips, the invention merges multiple grip size options into a single grip assembly with a reversible backstrap. The backstrap can be removed and reinstalled in different orientations to provide different grip sizes, eliminating the need to carry multiple separate grip components while maintaining adaptability to different hand sizes
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Simplifies the firing control mechanism by enabling easy slide removal without disengaging the trigger and provides a convenient, integrated solution for altering grip sizes without additional components.
Implementation Method 1
a trigger bar camming member pivotably disposed in the frame and defining a camming surface engaged by the trigger bar. Pivoting the camming member moves the trigger bar from a first position to a second position in spatial relationship to the striker
Implementation Method 2
a striker biasing spring; and a striker cocking/release mechanism. The cocking/release mechanism typically includes a striker catch that engages the striker protrusion to cock and hold the striker in a ready-to-fire cocked position
Data Source
AI summary
A striker-fired firearm with field stripping mechanism and method. A striker-fired firearm generally includes a frame, a slide supported by the frame for longitudinal forward and rearward movement, a striker axially movable in a path of travel along a longitudinal axis, a trigger pivotably connected to the frame, a trigger bar movably coupled to the trigger and adapted to engage the striker, and a trigger bar camming member pivotably disposed in the frame and defining a camming surface engaged by the trigger bar. Pivoting the camming member moves the trigger bar from a first position to a second position in spatial relationship to the striker. In a preferred embodiment, the camming member is an ejector operable to expel spent cartridge casings from the firearm.